Stone-carrier.



Patented luly 23, 190|.

W. H. D-EMUBEST, In.

STDNE CARRIER.

(Application led June 25, 1900.)

2 Sheets-Sheet l.

(No Modal.)

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A TTOHNEYS m :ns co. Pnofauma, wur-Nomina c? No. 678,944. Patentd my 2 3, lem. w. H. nsmonesr, 1R.

STONE CARRIER,-

(Applicntion Bled June 26, 1900.)

2 sheets-sheet 2.'

v wmvEssE UNITED STATES i WILLIAM H. DEMOREST, JR., OF NEWT YGRK, N. Y.

STONE-CARRIER.

' SPECIFICATION forming part of Letters Patent No. 678,944, dated July 23, 1901.

Application filed .Tune 25, 1900.

To @ZZ whom. t may concern,.-

Be it known that I, WILLIAM H. DEMoREsT, Jr., a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Stone-Carrier, of which the following is a full, clear, and exact description.

This invention relates to a stone-carrier for stone grinding and polishing machines, on which carrier the stones are held and moved back and forth over the tool or other means acting on the stone.

This specification is the disclosure of one form of the invention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the invention. Fig. 2 is a side elevation, and Fig. 3 is a front view with parts in section.

The carrier has a body portion or bed formed of side beams 4, which are built up of planks placed side by side and on edge, as shown. These side beams 4 are connected rigidly at their rear ends by two cross-beams 5, which are held rigidly together by a block 6 and suitable fastenings, which pass transversely through the block and beams. These parts 4 and 5 of the bed are thus held rmly together, and the front ends of the side beams are connected by a removable cross-bar 7, which when in operative position is placed, as shown in Figs. 1 and 3, with its ends bearing against the inner side faces of the side beams 4. The front cross-bar 7 has bolts 8 fastened toits respective ends, the bolts extending longitudinally of the cross-beam and being fitted in slots 9, formed in the front ends of the side beams 4. Hand-nuts 10 work on the bolts or screws 8, and by tightening up these nuts the parts 4 and 7 may be drawn rigidly together. The part 7 is arranged removably, so as to enable the carrier to be moved over large and heavy stone. In doing this the stones may be rst placed on the track, and then by removing the bar or beam 7 the carrier may be moved over the stone.

Serial No. 21.458. (No model.)

The bed is provided with carrier-wheels 11, which are adapted to run on the usual track- Ways, as will be understood by persons skilled in the art, and the carriage is driven back and forth by pinions (not shown) which mesh with racks 12 at each side of the bed of the carrier.

Upright frames 14 are mounted rigidly on the side beams 4 of the carrier and are arranged in pairs, which are two in number, the members being situated one on each side beam. These frames 14 have guide-bars 15 rigidly fastened at their side edges and spaced apart from the frames, so as to form vertical slideways in which are mounted blocks 16, these blocks being movable up and down and being two for each frame 14. The blocks 1G carry beams 17, the ends of which are respectively attached to the blocks, so that there are two beams 17 for each pair of frames 14, the beams 17 extending horizontally between the frames, as best shown in Fig. 3. Jaws 18 are adjustably mounted on the beams 17, and these jaws are held engaged with the stone by means of rods 19, passed loosely throughl the jaws and carrying hand-nuts 20, which respectively engage the jaws and by means of which the jaws may be moved together. The stones are carried in the jaws 18 and are sustained by the beams 17 and by means of mechanism which will be hereinafter described. Movement of the carrier back and forth will subject the stones to the action of the polishing-tools or other material.

Arranged over each beam 17 is a revoluble shaft 21, which shafts are mounted in bearings 22, attached to the upper parts of the frames 14, the shafts 21 running in parallelism with the respective beams 17. These shafts 21 are each provided with worm-wheels v23, which mesh with worms 24, fastened two on each of the two shafts 25. These shafts are mounted in boxes 26, carried by the frames 14, and are each fitted with a hand-wheel 27, by which they may be rotated. Each shaft 25 is therefore devoted to two of the shafts 21, and the pairs of shafts 21 may therefore be operated independently or in unison, as desired. When the shafts 21 are to be operted in unison, the shafts 25 are connected by IOO a clutch 28, and when the pairs of shafts 21 are to be operated independently the members of the clutch 28 should' be disconnected. This clutch may be of any construction desired.

Mounted loosely on each end portion of each shaft 21 is a sleeve 2), forming a drum. These drums are formed with threads or worms thereon, so as to guide chains 30, which are adapted to be wound .on or unwound from the drums. These chains 30 are respectively in connection with the end portions of the beams 1'7. Clutch members 32 are splined on the shafts 21 and work with the drums 29, so as to fasten the drums to the shafts. Ratchets 33 are formed on the drums 29 and work with pawls 34, carried on the frames 14, by means of which pawls and ratchets back movement of the drums 29 is prevented. It will therefore be seen that by turning the shafts 21 the beams 17 may be raised or lowered, thus raising the stones which are held by the jaws 18. By these means the stones may be held at any desired elevation, and they may be lowered down to fit them to the grinding or polishing tools or materials as the work progresses. One large stone may be carried by themachine, using therefor all four pairs of jaws 18, or two small stones may be carried, respectively, by two pairs of jaws. These may be independently raised and lowered by connecting or disconnecting the clutch 28 and operating the shafts 25.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A stone-carrier, having a vertically-adjustable beam, jaws' mounted thereon and adjustable longitudinally thereof, a rod extending between the jaws, and nuts working on the rod and engaging the jaws.

2. A stone-carrier having a bed, frames mounted thereon, a beam held vertically movable in the frames, means for raising and lowerin g the beam, and jaws carried by the beam.

A stone-carrier having a frame, a revoluble shaft mounted thereon, a drum carried loosely on the shaft, a clutch splined on the shaft and working with the drum, and stonegripping devices having connection with the drum to be actuated thereby.

4. A stone-carrier having a frame, a shaft mounted to turn therein, a drum mounted loosely on the shaft, a clutch member splined on the shaft and working with the drum, pawl-and-ratchet devices working between the frame and the drum, and stone-gripping means having connection with the drum.

5. A stone-carrier having a bed, frames erected thereon, guidebars attached to the sides of the frame to form slideways, blocks mounted in the slideways, a beam extending between and carried by the blocks, means for sustaining the beam, and stone-gripping devices carried by the beam.

6. A stone-carrier having a bed comprising side beams, a cross beam or beams at one end rigidly to hold the side beams together and a removable cross-beam at the other end for the purpose specified, and stone-lifting means sustained on the bed. A

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

VVILLAM H. DEMOREST, .l R. 1Witnesses:

ISAAC B. OWENS, EVERARD BOLTON MARSHALL. 

